213122201111 has 8 divisors (see below), whose sum is σ = 225434801760. Its totient is φ = 201063468672.

The previous prime is 213122201087. The next prime is 213122201161. The reversal of 213122201111 is 111102221312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213122201111 - 2¹⁰ = 213122200087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213122201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122201161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63465326 + ... + 63468683.

It is an arithmetic number, because the mean of its divisors is an integer number (28179350220).

Almost surely, 2^213122201111 is an apocalyptic number.

213122201111 is a deficient number, since it is larger than the sum of its proper divisors (12312600649).

213122201111 is a wasteful number, since it uses less digits than its factorization.

213122201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126934105.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 213122201111 its reverse (111102221312), we get a palindrome (324224422423).

The spelling of 213122201111 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred one thousand, one hundred eleven".